Properties of the Number 80782

Eighty Thousand Seven Hundred Eighty-Two

Basics

Value: 80781 → 80782 → 80783

Parity: even

Prime: No

Previous Prime: 80779

Next Prime: 80783

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 13 ² × 239

Divisors: 1, 2, 13, 26, 169, 239, 338, 478, 3107, 6214

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011101110001110

Octal: 235616

Duodecimal: 3A8BA

Hexadecimal: 13b8e

Square: 6525731524

Square Root: 284.2217444179808

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Pell numbers: a(0) = 0, a(1) = 1; for n > 1, a(n) = 2·a(n-1) + a(n-2). A129

a(n) = 6·a(n-1) - a(n-2) for n > 1, a(0)=0 and a(1)=2. A1542

Number of 2 X n binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column. A69306

Interleave denominators (A000129) and numerators (A001333) of convergents to sqrt(2). A2965

a(1) = 1, a(2) = 2; a(2·k) = 2·a(2·k-1) - a(2·k-2), a(2·k+1) = 4·a(2·k) - a(2·k-1). A84068

Expansion of 1/(1 + 2·x - x²). A77985

Number A(n,k) of spanning trees in C_k X P_n; square array A(n,k), n>=1, k>=1, read by antidiagonals. A173958

Number of n X 13 binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column. A69304

Fixed-k dispersion for Q = 8: Square array D(g,h) (g, h >= 1), read by ascending antidiagonals. A120861

a(n) = 2·a(n-1) + a(n-2) for n > 2, a(0) = a(1) = 1, a(2) = 2. A215928